LaboratorU
File checks
Browser-only checksum and file-integrity checks for downloads, handoffs, and audits.
File HashCalculate a SHA-256 hash for one file locally in your browser.File SignatureIdentify common file signatures locally from the selected file header.Hex DumpPreview the first bytes of a file as hex and ASCII locally in your browser.Checksum ManifestGenerate a SHA-256 checksum manifest for selected files locally in your browser.Checksum VerifyVerify selected files against a SHA-256 checksum manifest locally in your browser.Duplicate FilesFind duplicate selected files by SHA-256 hash locally in your browser.Large FilesRank selected files by size and flag large-file cleanup candidates locally in your browser.FAT32/exFATCheck selected file sizes and names for common FAT32/exFAT transfer issues locally.Folder ManifestGenerate a path-aware SHA-256 manifest for a selected folder locally in your browser.Folder CompareCompare a source folder and backup folder by relative path and SHA-256 hash locally in your browser.